Hi I was on Tiazac for about 6 ot 7 days and i skipped a few days of it,i have been feeling extremely dizzy and i saw my heart dr yesterday and he told me to stop the tiazac and he is puttting me on Coreg 6.25, i just got done sweeping and mopping the floor and im all out of breath sweating and my middle of my chest is burning,My heart dr has done ulrasound stress test 24 hour moniter on my heart aand does not feel there is realyy anything wrong with my heart other than my heart rate which he truley believes is my anxiety,He listened to my heart yesterday and says it sounded good but i swear i was sweating night before last annd last night and now after just abit of work im breatheless,Im wondering if this is normal i weigh 136 lbs and i dont really exercise.Is the dizziness normal from the tiazac and im having a metal taste ion my mouth that i havent had before,,,i havent started tghe coreg yet i also take ativan for anxiety and risperdal and remearon for depression,,,I could use some advice,,Thanks